Depending on the specific challenge version, the "hook" is usually one of the following:
Crack the hash: john --wordlist=/usr/share/wordlists/rockyou.txt bwas.hash BWAS.7z
The 7z signature ( 37 7A BC AF 27 1C ) might be slightly altered to prevent standard extraction tools from recognizing it. Depending on the specific challenge version, the "hook"
The archive contains another layer of compression or a disk image (like a .vmdk or .img ) that requires further mounting. 3. Exploitation / Extraction Step A: Cracking the Password (If encrypted) Depending on the specific challenge version